Improvement in steam-generators



ittica (titula.

GEORGE W. SHIELDS, OF LOISVILLE, KENTUCKY.

Letters Patent No. 110,298., dated December 20, 1870.

, IMPROVEMENT IN STEAM-GNERATRS.

The Schedule referred to h1 there Letters Patent and making part of the same.

To all whom it may concer-n Beit known that I, GEORGE W. SHIE'Lns, of Louisville, in the county of Jeerson and State of Ken` tucky, hare invented a new and improved Steam- Gene'rator; and I do hereby declare the following tobe a full, clear, and exact description of the same, reference being had to the accompanying drawing making a part of this specification, in which- Figure l is a side elevation;

Figure 2, a plan-view of the steam-generator;

Figure is a sectional elevation of a valve-chamber, with an elevation of the valve; and

Figure 4 is a sectional elevation of thevalve-chamber, through which the feed-water enters the apparatus.

This invention relatesto certain improvements of construction and detail in thatvclass of steam-generators in which the feed-water, prior or subsequent to' entering the boiler, .is conducted through pipes that traverse the furnace-chamber, where, when a `fire is built, said pipes and theA water therein are heated by -ca'loric that would otherwise be wasted, and a more speedy generation ofsteam ensues.

Referring to the drawing- A is a steameboiler. y

fa, av muddrum, placed` transversely beneath the boiler.

b, a pipe connecting lthe boiler and drum.

c, a vertical chamber placed at one side of a, and connected therewith by a pipe, d.

1e, a cylindrical valve, placed wthinthe chamber 'c and con-trolling the -aperture i, through which feedwater, forced into the chamber by a doctor or side the drum l pump, passes upward, lifting the valve e, and passing through the pipes dand b and drum a into the boiler. f

A screw, f, isplaced in the top of the chamber` with the mud-drum at one end, which connection is controlled by a valve whose hand-wheel is lettered l,y

said pipe k being also connected with the boiler by a branch-pipe, m, supplied withf a valve whose handwheel is lettered n.

At its other extremity the pipe 1t opens into the valve-chamber B, located beneath the furnace.

Said valve-'chamber is connected by a` pipe, o, with l a serpentine series of pipes, p, placed within the furnace beneath the boiler, which series is connected by a pipe, q, supplied with a valve whose hand-wheel is l lettered j with the boiler, the pipe q entering one end of the latter above the water-line.

To divert the feed-water from the mud-drum a, close the' valve e, within the chamber c, by turning down the s orew f. d Y

The feed-water then has .no way of escape from the chamber c except through the pipe'h, the valve of which should be opened by turning the hand-wheel fr. thus allowing the water to How into the pipe lo.

l The hand-wheel l should be turned so as to close its valve and shut the water off from the d rnm a.

The hand-wheeln should also be turned so as to close the pipe m. -This directs the water into the chamber B, the valve sin which it lifts, and flows thence intothe serpentine series of pipes p, where it is heated by the otherwise waste caloric.

From the pipes p the water, or, if vaporized, steam, flows to the boiler through the pipe q.

When the water is' conducted to the boiler by way of the mud-dru1n, as first described, the hand-wheels Ir and lmust be turned, so as to close their pipes.

In this case the water, after entering the boiler,

flows out through the pipe in, whose valve must be open, into the serpentine series p, where it is vapor--y ised, and whence it passes back into the boiler in the form of steam.

When the pipes p need blowing out the hand-wheel j is turned to close the 'pipe q, and the hand-wheel t is turned so as to open the chamber a in the side of the pipe q; the steam being turned back blows out the pipes.

By means of the valve-wheel ttlle amount and condition of the water in the pipes p can at all times be ascertained.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

lhe arrangement of the `chamber o, pipes It, k, 0,11, and q, boiler A, and pipe m, as specified.

Witnesses: GEORGE W. SHIELDS.

E. CLARK, E. JEWELL. 

